Question by Murilo: Why are there black and white movies when color movies already existed?
Gone with the wind and Wizard of oz were color movies, and both were released in 1939, still movies like citizen kane and casablanca are black and white and were released in 1941 and 1942. There are even earlier movies like On the waterfront from 1954 black and white. Why didn’t they make these with color when they clearly could?

Best answer:

Answer by justalittleinsaneblack and white color has more attraction then the color movies

Home footage of some guy’s kids is for once proving interesting: researchers at the National Media Museum in Bradford have reassembled a 110-year-old film reel containing the first known color motion picture in existence.

Shot by Edward Raymond Turner in 1902, the film was shot using a process he first patented in March of 1899. As you can learn in more detail in the below video, color was achieved by shooting special film through color filters, each going to a separate frame; the three frames then needed to be filtered and projected together to get a full-color shot. The process was overly-complicated and thought unsuccessful at the time of Turner’s abrupt death at 29, but by scanning the film and letting computers handle the business of marrying the colors, the BFI National Archive has turned the century-old footage into digital files that are now being properly viewed for the first time. Now we can make that look into an Instagram filter.